Table 1.

List of model variables

Symbol	Variablea	Dimension
B S	Biomass of susceptible bryozoans	[ML-3]
B C	Biomass of covertly infected bryozoans	[ML-3]
B O	Biomass of overtly infected bryozoans	[ML-3]
S S	Non-infected statoblast abundance	[L-3]
S I	Infected statoblast abundance	[L-3]
F S	Susceptible fish abundance	[L-3]
F E	Exposed fish abundance	[L-3]
F I	Infected fish abundance	[L-3]
F C	Carrier fish abundance	[L-3]
Z B	Abundance of spores released by bryozoans	[L-3]
Z F	Abundance of spores released by fish	[L-3]
$Z_B^{*}={\mathit{\beta }}_F{Z}_B$	Abundance of equivalent spores released by bryozoans	[T-1]
$Z_F^{*}={\mathit{\beta }}_B{Z}_F$	Abundance of equivalent spores released by fish	[T-1]

^aAll model variables are referred to a water volume